Demystifying Google Cloud Persistent Disk Pricing : Everything You Need to Know

Google Cloud Platform (GCP) provides a range of powerful storage options to help businesses store and manage their data effectively. 

One of the most popular storage services offered by GCP is Google Cloud Persistent Disk, which provides scalable and durable block storage for virtual machines and Kubernetes Engine containers. 

In this article, we will demystify Google Cloud Persistent Disk pricing and provide everything you need to know to make informed decisions about your storage needs on the platform. 

Understanding Google Cloud Persistent Disk

Google Cloud Persistent Disk is a Google Cloud Platform (GCP) block storage solution that allows users to store and manage their data in the cloud. Persistent Disk provides dependable, long-lasting, and scalable storage for GCP virtual machines and containers.

Features of Persistent Disk

Persistent Disk is intended to provide continuous performance and high availability, allowing users to store and access data quickly and effectively from any location.

It has various features that make it a popular commercial storage option, including:

  • Durability

    Persistent Disk offers resilient storage that can endure hardware malfunctions and interruptions in the data center. Replication is used to guarantee that data is always accessible, notwithstanding a failure.

  • Scalability

    Persistent Disk has a high degree of scalability, allowing customers to change their storage capacity as necessary. Users can now manage increasing workloads without being concerned about storage space.

  • Performance

    Persistent Disk offers a range of performance levels to accommodate various workloads' unique requirements. Users can swiftly and effectively store and access their data since it offers consistent performance.

  • Security

    To guard against unwanted access or data breaches, Persistent Disk has strong security measures. It includes access controls to make sure that only authorized users can access the data, and it delivers encryption both in transit and at rest.

  • Usability

    Persistent Disk has a straightforward user interface that makes it simple to administer and keep track of storage utilization. It effortlessly connects with other GCP services, making application deployment and management simple.

Types of Persistent Disks 

Google Cloud Persistent Disk provides three disk formats to fulfill varying performance and cost needs. These are the three types of Persistent Disks:

  1. 1

    Standard HDD (Hard Disk Drive)

    The standard HDD is the most cost-effective solution for Persistent Disks. It offers large-capacity storage at a low cost per gigabyte, making it an attractive solution for applications that do not necessitate great performance. 

    The maximum read and write throughput of a standard HDD is 80 MB/s per disk, with a maximum IOPS of 120.

  2. 2

    Standard SSD (Solid State Drive)

    A standard SSD outperforms a standard HDD in terms of performance, making it an excellent choice for jobs requiring moderate performance.  

    With a maximum read and write throughput of 240 MB/s per disk and a maximum IOPS of 15,000, it offers better read and write speeds than Standard HDD.

  3. 3

    Premium SSD

    Premium SSDs are high-performance Solid-State Drive (SSD) based Storage designed to support I/O intensive workloads with significantly high throughput and low latency.

    It has a maximum IOPS of 60,000 and a read-and-write throughput per disk of 7,000 MB/s.

These disk kinds each have unique performance traits and price ranges. The precise workload requirements, including dataset size, needed I/O throughput, and budget, determine the type of disk to use. 

Choosing the right disk type and capacity for your workload

It might be difficult to choose the correct disk type and capacity for your workload. The ideal strategy is to assess your workload and choose the appropriate storage solution depending on your budget, performance demands, and workload. 

  • Premium SSD is the ideal choice for workloads that demand high-performance storage, whereas Standard HDD is an excellent alternative for tasks that do not need high performance but need big-capacity storage. 

  • A reasonable middle ground between the two is Standard SSD, which delivers superior performance than Standard HDD at a lesser price than Premium SSD. 

  • It's also crucial to take into account the anticipated growth of your workload and select a capacity that can handle future development.

Pricing Model for Google Cloud Persistent Disk

The pricing for Google Cloud Persistent Disk is based on the disk type, capacity, and region. There are three disk types available - Standard HDD, Standard SSD, and Premium SSD - each with its own price per gigabyte per month. The pricing model for each disk type and capacity is as follows:

  • Standard HDD: $0.040 per GB per month

  • Standard SSD: $0.170 per GB per month

  • Premium SSD: $0.340 per GB per month

The price per gigabyte decreases as the capacity of the disk increases. For example, the price per gigabyte per month for a Standard SSD disk with 1TB capacity is $0.170, whereas the price per gigabyte per month for a Standard SSD disk with 10TB capacity is $0.050.

Factors affecting pricing structure for Google Cloud Persistent Disk

The pricing structure for Google Cloud Persistent Disk is based on three factors - monthly usage, regional pricing, and provisioned capacity.

  1. 1

    Monthly usage

    The monthly cost of the Persistent Disk is computed depending on the number of gigabytes stored and the number of gigabytes transported in and out of the disk.

  2. 2

    Regional pricing

    The price of the Persistent Disk varies based on where you live. For example, the price of the disk in the United States differs from that in Europe or Asia.

  3. 3

    Provisioned capacity

    The Persistent Disk's pricing is also determined by its provisioned capacity. This implies that the user gets paid depending on the amount of storage capacity granted, regardless of the quantity of data saved.

To summarize, it is advised to select the disk type and capacity depending on the particular workload needs in order to save expenses using Persistent Disk.

For instance, it can be important to pick a Premium SSD if the task demands great performance, but Standard HDD might be a more affordable choice for workloads that do not. 

Best practices for optimizing costs with Persistent Disk

Here are some best practices for optimizing costs with Google Cloud Persistent Disk:

  • Choose the right disk type and capacity

    Choosing the appropriate disk type and capacity based on the workload requirements is the first step toward optimizing costs. 

    For example, if the workload requires high performance, it may be necessary to choose Premium SSD, whereas, for workloads that do not require high performance, Standard HDD may be a more cost-effective option.

  • Monitor usage and adjust capacity as needed

    It is important to monitor disk usage and adjust the capacity as needed to avoid over-provisioning and unnecessary costs. 

    Google Cloud provides usage monitoring and analytics tools to help users understand how much capacity they are using and to identify areas where they can optimize usage.

  • Utilize regional snapshots

    Regional snapshots allow users to generate point-in-time backups of their drives and store them in a separate area. This can assist to cut expenses by allowing consumers to generate backups in a cheaper location.

  • Delete unused disks

    To prevent incurring excessive expenditures, unused disks should be erased. It is critical to evaluate the list of disks in use on a regular basis and remove any disks that are no longer needed.

  • Optimize I/O operations

    Excessive I/O operations may result in increased expenditures. It is suggested that I/O operations be optimized by minimizing the amount of read and write operations and combining several I/O requests into a single request.


In conclusion, understanding and optimizing Google Cloud Persistent Disk pricing is essential for efficiently managing and storing data on the cloud. 

Choosing the right disk type and capacity, monitoring costs, and following best practices can help users optimize their expenses and meet their workload requirements.


What is the difference between standard and premium disks?

Standard disks provide a compromise between cost and performance for workloads with low to moderate I/O requirements. They are appropriate for workloads like file servers, backup storage, and low-traffic web servers and employ HDDs for storage.

On the other side, premium disks provide better performance than regular disks and are built for workloads with high I/O demands. They are suited for applications like databases, analytics, and high-traffic web servers since they store data on SSDs.

How do I calculate the cost of my Persistent Disk?

A persistent disk's price is determined by the type, capacity, and usage of the disk. On the Google Cloud pricing page, the cost per gigabyte per month for each kind and capacity of the drive is stated.

The quantity of storage used and the volume of data transported into and out of the disk are then used to determine the monthly cost.

How does the pricing for Persistent Disk differ from other storage options on Google Cloud?

Cloud Storage, Cloud Filestore, and Persistent Disk are just a few of the storage choices provided by Google Cloud. Each storage option's price depends on a number of variables, including the storage type, frequency of access, and durability.

Whereas Cloud Storage is built for object-level storage and is suited for usage with web browsers, Persistent Disk is designed for block-level storage and is ideal for use with virtual machines.

Are there any discounts available for Persistent Disk usage?

Yes, Google Cloud offers sustained use discounts for users who use a Persistent Disk for a significant period of time. Users can receive a discount of up to 30% on the monthly price of their disk if they use it for a certain percentage of the month.

Can I change the disk type or capacity of my Persistent Disk after creation?

Yes, it is possible to change the disk type and capacity of a Persistent Disk after creation. However, there may be some downtime associated with the change, and it is recommended to back up any important data before making any changes.

How do I monitor and manage the cost of my Persistent Disk?

Google Cloud provides several tools for monitoring and managing the cost of Persistent Disk, including Cloud Monitoring and Cloud Billing. Cloud Monitoring allows users to monitor the usage and performance of their disks, while Cloud Billing provides detailed billing reports and cost projections. 

Can I use Persistent Disk with other Google Cloud services like Kubernetes?

Yes, Persistent Disk can be used with other Google Cloud services, including Kubernetes. It can be used as a storage volume for Kubernetes pods and can be dynamically provisioned and de-provisioned based on workload requirements.

About the author


Youssef is a Senior Cloud Consultant & Founder of

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